Viraloop

Viraloop

Analyze any website and generate a 6-slide carousel for TikTok/Instagram with visual coherence. Posts directly to your feed (no drafts) with auto trending music. Both APIs (Gemini + upload-post.com) have free plans — no credit card needed to start.

Overview

Turn any URL into a 6-slide carousel for TikTok and Instagram, publish it straight to the feed with trending audio, then read the analytics and feed what worked back into the next run. The loop is the point: each day's hooks are chosen against what actually performed yesterday, not against a fixed template.

Six stages: research the site, generate hook variants, render slides, review them with vision, publish, then learn from the numbers.

Prerequisites

• Node.js and Python 3 on PATH
• GEMINI_API_KEY for research, hooks and image generation
• UPLOADPOST_TOKEN plus a profile with TikTok and Instagram connected
• Both APIs have free tiers — no card needed to start

Philosophy: Daily Iteration Loop

The key to growth is consistency + learning:

1. Post 1 carousel per day - Consistency beats virality
2. Track everything - Every post generates data
3. Learn from data - What hooks work? What times? What visuals?
4. Iterate and improve - Each carousel is better than the last

Day 1: Post → Analyze → Learn
Day 2: Post (improved) → Analyze → Learn  
Day 3: Post (better) → Analyze → Learn
...
Day 30: You have 30 data points and a refined strategy

The skill maintains a learnings.json that accumulates insights across all posts:

• Best performing hooks
• Optimal posting times
• Visual styles that work
• CTAs that convert

This is not a one-shot tool. It's a growth engine.

Quick Start

# 1. Full business research
node {baseDir}/scripts/analyze-web.js https://your-website.com

# 2. Generate 3 hook variants (SHOCK, CURIOSITY, CONTRADICTION)
GEMINI_API_KEY="your-key" bash {baseDir}/scripts/generate-hooks.sh

# 3. Review hooks with vision, pick the best one

# 4. Generate slides using selected hook type
GEMINI_API_KEY="your-key" bash {baseDir}/scripts/generate-slides.sh [shock|curiosity|contradiction]

# 5. Review slides (agent verifies text and quality)
# Agent uses vision to check each slide

# 6. Publish to TikTok + Instagram
UPLOADPOST_TOKEN="your-token" bash {baseDir}/scripts/publish-carousel.sh

# 7. Check analytics (after 24-48h)
UPLOADPOST_TOKEN="your-token" bash {baseDir}/scripts/check-analytics.sh 7

# 8. Learn from data for next carousels
node {baseDir}/scripts/learn-from-analytics.js

Instructions

1. Research the site with analyze-web.js to extract the business, audience and angles.
2. Generate three hook variants — SHOCK, CURIOSITY, CONTRADICTION — and review them.
3. Pick one hook type and generate the six slides against it.
4. Review the slides with vision. Check the text is legible and not clipped before anything is published; a broken slide is worse than no post.
5. Publish to TikTok and Instagram with publish-carousel.sh.
6. Read analytics after a day and run the learning step so the next batch is informed.

Hook Categories (Visual Novelty System)

The key to breaking the 1000 views ceiling is visual novelty in the first slide. We generate 3 hook types:

Anti-Stock Filter

All hooks include anti-stock prompting to avoid:

• Generic stock photo aesthetics
• Shocked pretty girl trope
• Typical influencer poses
• Overused laptop-coffee setups
• Corporate handshake scenes

Hook Testing Workflow

1. Generate 3 variants with generate-hooks.sh
2. Review with vision, score each 1-5 on novelty
3. Kill anything that looks familiar
4. Use best hook for carousel
5. Track which hook TYPE performs best over time

Image Model

Uses gemini-3.1-flash-image-preview to generate slides.

• Local script: {baseDir}/scripts/generate_image.py
• Supports image-to-image for visual coherence between slides

Step 1: Full Research (analyze-web.js)

Performs COMPLETE business investigation:

1. Brand Analysis

• Brand name (from domain or title)
• Logo (URL or SVG)
• CSS colors (background, primary, links, headings)
• Typography (body font, heading font)
• Favicon

2. Content Analysis

• Headline and tagline
• All headings (page structure)
• Features/benefits (title + description)
• Pricing/plans
• Testimonials
• Stats/metrics
• CTAs
• Meta tags (title, description, og:image)

3. Internal Pages

• Navigates pricing, features, about, testimonials
• Extracts additional content from each page

4. Competitor Detection

• Searches for known competitor mentions in content
• List of 20+ known SaaS competitors (Buffer, Hootsuite, Later, etc.)
• Detects "vs", "alternative", "compare" sections
• No external searches required - all from the website itself

5. Storytelling

• Detects business type (SaaS, ecommerce, app)
• Detects niche (social-media-tools, developer-tools, etc.)
• Generates hooks based on customer pain points
• Defines pain points from features
• Creates transformation narrative (before → after)

6. Visual Context

• Brand colors in CSS format
• Color description for prompts
• Typography for slides
• Image themes based on niche
• Style guide for coherence

Output: /tmp/carousel/analysis.json

Step 2: Generate Slides (generate-slides.sh)

Generates 6 slides with visual coherence using image-to-image:

Visual Coherence

• Slide 1 generates the base style (colors, typography, mood)
• Slides 2-6 use image-to-image with slide 1 as reference
• Maintains same color palette, fonts, and aesthetic

Prompts per Slide

Each slide has:

• Text: The main message
• Scene: Detailed visual description for background
• Style: Based on brand analysis

Output:

• /tmp/carousel/slide-{1-6}.jpg
• /tmp/carousel/caption.txt

Step 3: Review with Vision

After generating, the agent MUST review each slide:

• ✓ Text is legible and correct
• ✓ Words are not cut off
• ✓ Correct spelling
• ✓ Visual coherence between slides
• ✓ Acceptable image quality

If there are errors, regenerate the specific slide.

Image Format

• Resolution: 768x1376 (9:16 vertical ratio)
• Format: JPG (TikTok does NOT accept PNG)
• Text: Large, bold, with shadow for readability
• Background: Scene relevant to the business, not just solid colors

Step 4: Publish to TikTok + Instagram (publish-carousel.sh)

Publishes the carousel to TikTok and Instagram using Upload-Post API.

UPLOADPOST_TOKEN="your-token" bash {baseDir}/scripts/publish-carousel.sh

Endpoint: POST /api/upload_photos

• Docs: https://docs.upload-post.com/api/upload-photo

Parameters sent:

• platform[]=tiktok + platform[]=instagram
• auto_add_music=true - Adds music on TikTok automatically
• tiktok_title - Short title (max 90 chars) + hashtags
• title - Full caption for Instagram
• privacy_level=PUBLIC_TO_EVERYONE
• media_type=IMAGE - Photo carousel on Instagram
• async_upload=true - Process in background
• photos[] - The 6 slides JPG

⚠️ IMPORTANT Instagram: After publishing, user must go to Instagram and add viral music manually:

1. Open Instagram → Profile → The post
2. Edit → Add music
3. Search for trending/viral song

Output: Saves request_id in post-info.json for tracking.

Step 5: Analyze Performance (check-analytics.sh)

Gets TikTok and Instagram analytics to see what works.

UPLOADPOST_TOKEN="your-token" bash {baseDir}/scripts/check-analytics.sh 7

Endpoints used:

1. Profile analytics:

   GET /api/analytics/{user}?platforms=tiktok
   

   → Followers, likes, comments, shares, impressions

2. Total impressions:

   GET /api/uploadposts/total-impressions/{user}?platform=tiktok&breakdown=true
   

   → Total views per day

3. Per-post analytics:

   GET /api/uploadposts/post-analytics/{request_id}
   

   → Views, likes, comments for the specific carousel (TikTok + Instagram)

Docs: https://docs.upload-post.com/api/get-analytics

Step 6: Learn and Improve (learn-from-analytics.js)

Analyzes data and saves learnings for future carousels.

node {baseDir}/scripts/learn-from-analytics.js

Generates:

• learnings.json - Accumulated knowledge base
• Best hooks (those generating most views)
• Optimal posting times
• Recommendations for next carousel

Full Flow

# 1. Research business
node {baseDir}/scripts/analyze-web.js https://my-product.com

# 2. Generate slides
GEMINI_API_KEY="..." bash {baseDir}/scripts/generate-slides.sh

# 3. Review with vision (agent verifies text)
# Agent checks each slide image

# 4. Publish
UPLOADPOST_TOKEN="..." UPLOADPOST_USER="myuser" bash {baseDir}/scripts/publish-carousel.sh

# 5. (After a few hours/days) Analyze
UPLOADPOST_TOKEN="..." UPLOADPOST_USER="myuser" bash {baseDir}/scripts/check-analytics.sh 7

# 6. Learn for next carousels
node {baseDir}/scripts/learn-from-analytics.js

Output

Each run leaves six rendered slides plus a metadata file in the working directory, and the publish step returns a per-platform result:

Carousel published
  tiktok     ✅  https://tiktok.com/@brand/photo/7412...
  instagram  ✅  https://instagram.com/p/C8xY2...

The analytics step returns views, likes and saves per slide set, which the learning step consumes to rank hook types. Report which hook type won — that is the output that compounds.

Security

• Publishing is private by default. publish-carousel.sh posts with privacy_level=SELF_ONLY unless you set PRIVACY_LEVEL=PUBLIC_TO_EVERYONE and CONFIRM_PUBLIC=yes. An unattended or accidental run cannot put content on a public feed.
• Captions are never evaluated by the shell. The caption is generated from an arbitrary analysed website, so it is untrusted input; the request is built as a curl argument array rather than a shell string.
• Credentials are never printed. Scripts report [set], never any part of a token value — these run under cron and the output lands in a log file.
• Point VIRALOOP_ENV_FILE at your env file; it is sourced, not word-split.

Error Handling

• Gemini quota exhausted — the free tier is per-minute as well as per-day. Back off and retry rather than dropping to a worse model mid-batch.
• Slide text clipped or unreadable — caught in the vision review step, which exists precisely for this. Regenerate the slide; do not publish it.
• Upload-Post 401 — the token was sent as Bearer. Use Authorization: Apikey <token>.
• Instagram rejects the carousel — the account must be Business or Creator and linked to a Facebook Page. Personal accounts cannot publish through the API.
• One platform fails, the other succeeds — expected. Report both and retry only the failure.

Examples

Full daily run against a site

node scripts/analyze-web.js https://example.com
GEMINI_API_KEY="..." bash scripts/generate-hooks.sh
GEMINI_API_KEY="..." bash scripts/generate-slides.sh curiosity
bash scripts/publish-carousel.sh

Check yesterday's numbers and learn from them

bash scripts/check-analytics.sh
node scripts/learn-from-analytics.js

Files

{baseDir}/
├── SKILL.md                      # This documentation
└── scripts/
    ├── analyze-web.js            # Full business research
    ├── generate-slides.sh        # Generate 6 slides with coherence
    ├── generate_image.py         # Gemini 3.1 flash image
    ├── review-slides.js          # Prepare slides for review
    ├── publish-carousel.sh       # Publish via Upload-Post API
    ├── check-analytics.sh        # Get analytics (TikTok + Instagram)
    ├── learn-from-analytics.js   # Learn from data
    └── search-competitors.js     # Optional external search

Environment Variables

Hook Examples by Niche

Why Viraloop?

Notes

• Analysis extracts competitors from the website content itself (20+ known SaaS)
• Image-to-image maintains coherence but takes ~20s per slide
• Generated caption includes niche-relevant hashtags
• Always review slide text - sometimes it gets cut off
• auto_add_music on TikTok improves engagement
• Check analytics after 24-48h for meaningful data
• Learnings accumulate and improve with each published carousel
• TikTok title max 90 characters (auto-truncated with hashtags)

Resources

• Upload-Post API documentation: https://docs.upload-post.com
• Photo and carousel requirements: https://docs.upload-post.com/api/photo-requirements
• Gemini API keys: https://aistudio.google.com/apikey
• Dashboard: https://upload-post.com